<!DOCTYPE html>
<html lang="zn">
<head>
    <meta charset="UTF-8">
    <title>背景重复</title>
    <style>
        .box1{
            width: 990px;
            height: 32px;
            margin: 0 auto;
            background-image: url('./img/bg.png');
            background-repeat: repeat-x;
        }
    </style>
</head>
<body>
    <div class="box1"></div>
</body>
</html>